Function: immune response.
Location: thymus, spleen, lymph nodes, lymphatic nodules, and diffuse lymphatic tissue
Function: fine supporting meshwork for lymphocytes, macrophages, plasma cells; secretion of ground substance and fibers; phagocytosis
Composition: ground substance, reticular fibers, reticular (adventitial) cells (except for the thymus), epithelioreticular cells (thymus).
Function: all stages of proliferation and differentiation of the immunocompetent cells.
Function: cell- mediated immunity
Function: humoral immunity and production of antibodies